cassava has 4 distinct synonyms spread across 3 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a starch made by leaching and drying the root of the cassava plant; the source of tapioca; a staple food in the tropics
cassava root eaten as a staple food after drying and leaching; source of tapioca
Synonyms, antonyms and the broader and narrower relations for cassava come from Princeton University’s WordNet. Full sources and licences.
any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch